Horseshoe



(No Model.)

M. L. SHAY & G. WORD EN;

HORSESHOE. No. 340.626. Patented Apr. 27, 1886. r

I I ammary N. PErERs. Vlwiaiilhagraphar, Washington. D c

UNITED STATES PATENT OFFICE.

MARSHALL L. SHAY AND CHRISTOPHER 'WORDEN, OF CLEVELAND, OHIO.

HORSESHOE.

SPECIFICATION forming part of Letters Patent No. 340,626, dated April 27, 1886.

Application filed October 29, 1885. Serial No. 181,217. (No model.)

.Our invention relates to that class of horseshoes which are provided with removable toe and heel calks. All devices of this class with which we are familiar are objectionable, either is by reason of the loose and insufficient manner in which the calks are secured to the shoe proper or because the parts require too much labor and nicety in making and finishing to enable the manufacturer to keep the cost below a figure which is essential to their general adoption and use.

Vi th these objections to previously-existing devices in view the object of our present invention is to provide simple, cheap, and durable means for securing the'calks to the shoe.

To this end our invention consists in providing the shoe proper, wherever a calk is to be secured, with a pair of ribs or lugs, which are so formed or inclined relatively to the shoe 3o as to form between them an undercut or dovetailed groove. One of these ribs or lugs is provided at each end with a laterally-projecting shoulder,which,when taken together,form a recess just the length of the call; it is de- 3 5 sired to secure. The calk is of wedge shape, corresponding in angle of inclination to the inner face of the lug or rib. The ealk when inserted is secured against displacement by driving between it and the lug or rib which 40 is not recessed a key of wedge shape in cross section, whose end is afterward clinched or bent over. This forms a simple and effective mode of securing the calk, but becomes the more valuable when used in connection with the second part of our invention,whose object is to secure the parts more firmly and prevent rattlin The second part of our invention consists in placing the lugs or ribs which project from the shoe proper at a slight angle to each other, and forming the key with a corresponding tapenfrom end to end, so that by driving it in the call; may be clamped with any degree of force, being held by clinching or bending the protruding point of the key.

The third part of our invention consists in forming the key with a lug, shoulder, or offset, against which may be placed the point of a punch to facilitate its removal.

In the accompanying drawings, Figure l is a view in perspective of our improved horseshoe, one of the heel-calks being removed to.

show more clearly the seat for the calk. Fig.

.2 is a plan view, and Fig. 3 an end elevation,

of the toe-call: in position secured to the shoe. Fig. 4 is a view in perspective of a key for securing a ealk. Fig. 5 is a plan view of one of the heel-calks in position secured to the shoe. 7

A represents a horseshoe that is provided with ribs to and a, arranged in pairs for respectively holding the toe and heel calks, the inner face of the ribs being undercut to form dovetail seats for the calk and key, the ribs of a pair beingsct a trifle farther apart at one end to correspond with the longitudinal taper of the key. The rib (1/, against which the calk is keyed, has shoulders nfflthat e1nbrace the ends of the call; and hold the latter from moving endwise. \Vithout the provision of the shoulders it is difficult, if not iinprae ticable, to key a call: so firmly that it will not move endwise and become loosened.

The shoe may be made of cast metal-{or instance, of malleable east-iron, or, better st1ll, of steel casting-#50 that no fitting is required. The shoe may also be forged by means of su1table dies in a droppress, in which case the ribs are swaged or closed a trifle at the outer ends to form the dovetail after the forging proper. The calks Band Bare alike in crosssection, being cut from bars of steel that are rolled with one edge thinner than the other edge, as shown more clearly in Figs. 1 and 3. No labor is required on the calks except to cut the bar of steel into suitable lengths, the toe-calks B being of course larger than the heel-calks.

Keys 0, for securing the calks, are made tapering or wedge-shaped both longitudinally and transversely. After the key is driven home the thin end or point is bent around the end of the rib a, as shown in dotted 1:ines,Figs. 2 and 5, to hold the key from backing out.

ICO

Vhen it is desired to back out the key, the bent point can be straightened with a blow of a hammer, and the key is more conveniently backed out by a punch set against the shoulder 0 of the key, said shoulder or lug extending below the rib. As the ealks are held from moving endwise and the key is held from back ing out, it is not necessary to drive the key tight enough to strain the ribs or the shoe to secure the calks against any liabilities of displacement. Of course the calks may be tenipered, if preferred. It is advisable to change the calks frequently when the roads are icy and save the partially-worn calks for summer use.

The device is simple, cheap, and effective, and in use is found to be entirely satisfactory.

\Ve are aware that it has been proposed to secure a calk having a dovetailed or wedgeshaped base between apair of parallel lugs projecting from the shoe proper in such a manner as to form a dovetailed or u ndercut groove between them, by means of a key which is of wedge shape in cross-section, the calk being provided with a fin or lip, which fits a complementary groove or notch in one of the lugs; but such is not the equivalent of our invention, and we hereby disclaim any feature or features which our device has in common therewith.

Having thus described our invent-ion, the

following is what we claim as new therein and desire to secure by Letters Patent:

1. In a horseshoe, the combination of a pair of lugs or ribs projecting from the shoe proper, and forming a dovetail or undercut groove between them, shoulders projecting from the ends of one lug toward the other, forming a recess, a wedge-shaped calk fitting in said recess, and a tapering key driven between the calk and the face of the opposed lug, substantially as and for the purposes set forth.

2. A horseshoe constructed with a pair of inclined-faced ribs forming a dovetail or undercut groove, and one of them recessed to form a calk-seat, in combination with a wed geshaped calk fitting in said seat, and a tapering key wedge shaped in cross section, and

having a thin end for clinching and an offset or shoulder for driving it out, said key being driven between the calk and the face of the opposed lug to eonfine the calk in its seat, as shown and described.

In testimony whereof we sign this specification, in the presence of two-witnesses, this 26th day of October, 1885.

MARSHALL L. SHAY, CHRISTOPHER \VORDEN.

Vitnesses:

G. XV. SHUM'WAY, N, S. AMSTUTZ. 

